CA2462166A1 - Medical devices with increased ultrasound visibility - Google Patents
Medical devices with increased ultrasound visibility Download PDFInfo
- Publication number
- CA2462166A1 CA2462166A1 CA002462166A CA2462166A CA2462166A1 CA 2462166 A1 CA2462166 A1 CA 2462166A1 CA 002462166 A CA002462166 A CA 002462166A CA 2462166 A CA2462166 A CA 2462166A CA 2462166 A1 CA2462166 A1 CA 2462166A1
- Authority
- CA
- Canada
- Prior art keywords
- layer
- gas bubbles
- catheter
- inner layer
- bubbles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000002604 ultrasonography Methods 0.000 title abstract 3
- 239000000463 material Substances 0.000 claims abstract 7
- 210000001161 mammalian embryo Anatomy 0.000 claims abstract 3
- 229920003023 plastic Polymers 0.000 claims 5
- 239000004033 plastic Substances 0.000 claims 4
- 238000012285 ultrasound imaging Methods 0.000 claims 4
- 239000004005 microsphere Substances 0.000 claims 1
- 229920000642 polymer Polymers 0.000 claims 1
- 238000012800 visualization Methods 0.000 claims 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M25/0045—Catheters; Hollow probes characterised by structural features multi-layered, e.g. coated
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/08—Detecting organic movements or changes, e.g. tumours, cysts, swellings
- A61B8/0833—Detecting organic movements or changes, e.g. tumours, cysts, swellings involving detecting or locating foreign bodies or organic structures
- A61B8/0841—Detecting organic movements or changes, e.g. tumours, cysts, swellings involving detecting or locating foreign bodies or organic structures for locating instruments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/08—Detecting organic movements or changes, e.g. tumours, cysts, swellings
- A61B8/0833—Detecting organic movements or changes, e.g. tumours, cysts, swellings involving detecting or locating foreign bodies or organic structures
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
- A61L29/14—Materials characterised by their function or physical properties, e.g. lubricating compositions
- A61L29/18—Materials at least partially X-ray or laser opaque
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0009—Making of catheters or other medical or surgical tubes
- A61M25/001—Forming the tip of a catheter, e.g. bevelling process, join or taper
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/42—Gynaecological or obstetrical instruments or methods
- A61B17/425—Gynaecological or obstetrical instruments or methods for reproduction or fertilisation
- A61B17/435—Gynaecological or obstetrical instruments or methods for reproduction or fertilisation for embryo or ova transplantation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
- A61B2090/3925—Markers, e.g. radio-opaque or breast lesions markers ultrasonic
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/12—Diagnosis using ultrasonic, sonic or infrasonic waves in body cavities or body tracts, e.g. by using catheters
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Biophysics (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Radiology & Medical Imaging (AREA)
- Molecular Biology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Pathology (AREA)
- Surgery (AREA)
- Medical Informatics (AREA)
- Hematology (AREA)
- Pulmonology (AREA)
- Anesthesiology (AREA)
- Optics & Photonics (AREA)
- Epidemiology (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Materials For Medical Uses (AREA)
- Prostheses (AREA)
Abstract
Embryo transfer catheters have been proposed containing gas bubbles to increase visibility under ultrasound observation. In the present invention, the catheter or other medical device has a shaft extruded with two layers. The outer layer is relatively thick and contains gas bubbles sufficient to increase the visibility of the catheter under ultrasound observation but with a density that allows material within the catheter to be viewed by the eye. The inner layer is relatively thin and is free of bubbles so that it provides a smooth bore to the catheter.
Claims (18)
1. A medical device comprising an elongate portion of plastics material, the portion being extruded with at least a first, inner layer and a second layer on an outside of the inner layer, wherein one of said layers is substantially free of gas bubbles, and wherein the other of said layers includes gas bubbles dispersed within it to increase the visibility of the device under ultrasound imaging.
2. A device according to Claim 1, wherein said layer substantially free of gas bubbles is thinner than said other layer.
3. A device according to Claim 1, wherein said layer substantially free of gas bubbles is said inner layer
4. A device according to Claim 1, wherein said second layer provides an outer surface of the device.
5. A device according to Claim 1, including a third layer on an outside of said second layer.
6. A device according to Claim 5, wherein said second layer contains gas bubbles, and wherein said first and third layers are substantially free of gas burbles.
7. A device according to Claim 1, wherein the bubbles are in a region extending around the entire circumference of the device.
8. A device according to Claim 1, wherein the bubbles extend in a continuous region along the length of the device.
9. A device according to Claim 1, wherein the gas bubbles have a size in the range 0.1 µ
to 300µ.
to 300µ.
10. A device according to Claim 9, wherein the gas bubbles have a size in the range 1µ to 50µ.
11. A device according to Claim 10, wherein the gas bubbles have a size in the range 5µ
to 10µ.
to 10µ.
12. A device according to Claim 1, wherein the gas bubbles are provided by gas-filled polymer microspheres.
13. A medical device according to Claim 1, wherein the device is a catheter having a bore extending along its length.
14. A catheter according to Claim 13, wherein said inner layer has an inner surface providing the bore of said catheter.
15. A catheter according to Claim 13, wherein said plastics material is transparent to the eye, and wherein the density of bubbles is such as to permit material within the catheter to be viewed by the eye.
16. A catheter comprising an elongate shaft of plastics material, the shaft being extruded with an inner layer and an outer layer on an outside of the inner layer, wherein said inner layer is substantially free of gas bubbles, wherein said outer layer includes gas bubbles dispersed within it to increase the visibility of the device under ultrasound imaging, and wherein said outer layer is thicker than said inner layer.
17. An embryo transfer catheter comprising an elongate shaft of transparent plastics material, the shaft being extruded with an inner layer and an outer layer on an outside of the inner layer, wherein said inner layer is substantially free of gas bubbles, wherein said outer layer includes gas bubbles dispersed within it to increase the visibility of the device under ultrasound imaging, wherein the density of bubbles is insufficient to prevent visualization of an embryo in the catheter, and wherein said outer layer is thicker than said inner layer.
18. A catheter comprising an elongate shaft of plastics material, the shaft being extruded with three layers, comprising an inner layer, an outer layer and a middle layer between said inner and outer layers, wherein said inner and outer layers are substantially free of gas bubbles, wherein said middle layer includes gas bubbles dispersed within it to increase the visibility of the device under ultrasound imaging, and wherein said inner and outer layers are thinner than said middle layer.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0307350.9A GB0307350D0 (en) | 2003-03-29 | 2003-03-29 | Catheters |
GB0307350.9 | 2003-03-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2462166A1 true CA2462166A1 (en) | 2004-09-29 |
CA2462166C CA2462166C (en) | 2011-05-24 |
Family
ID=9955845
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2462166A Expired - Fee Related CA2462166C (en) | 2003-03-29 | 2004-03-26 | Medical devices with increased ultrasound visibility |
Country Status (10)
Country | Link |
---|---|
US (2) | US10045756B2 (en) |
EP (1) | EP1462056B1 (en) |
JP (1) | JP4724372B2 (en) |
AT (1) | ATE485771T1 (en) |
AU (1) | AU2004201146B2 (en) |
CA (1) | CA2462166C (en) |
DE (1) | DE602004029736D1 (en) |
DK (1) | DK1462056T3 (en) |
ES (1) | ES2350578T3 (en) |
GB (2) | GB0307350D0 (en) |
Families Citing this family (33)
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AU2004201146A1 (en) | 2004-10-14 |
JP2004298632A (en) | 2004-10-28 |
US20130281835A1 (en) | 2013-10-24 |
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AU2004201146B2 (en) | 2009-12-03 |
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DE602004029736D1 (en) | 2010-12-09 |
DK1462056T3 (en) | 2011-01-31 |
GB2400804B (en) | 2006-03-15 |
GB0307350D0 (en) | 2003-05-07 |
JP4724372B2 (en) | 2011-07-13 |
EP1462056A1 (en) | 2004-09-29 |
EP1462056B1 (en) | 2010-10-27 |
US20040193055A1 (en) | 2004-09-30 |
ES2350578T3 (en) | 2011-01-25 |
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